5 - 12
ADM 6725 E10
KA
T
Program Branch MEASURING
54.5 m3/h
A: Volume Flow
M8
O N
O
Returns to the bar graph display.
Activates the totaliser.
5.3.2 Recognition of Flow Direction
The direction of flow in the pipe can be recognised with the help of the displayed "Volume
Flow" in conjunction with the arrow formed from the engravings on the transducers:
•
The medium flows in direction of the arrow if the display shows a
positive
flow
reading (example: 54.5 m
3
/h)
.
•
The medium flows against the arrow direction if the display shows a
negative
flow
reading (example: -54.5 m
3
/h).
5.3.3 Cut-off Flow
The cut-off flow function becomes active if the flow velocity falls below a certain value
which is set by factory default to 5 cm/s. Should the flow velocity fall below this value, the
displayed/recorded measuring value will be automatically set to 0 (zero).
In program branch SPECIAL FUNCTIONS, you may define the cut-off flow limit
(see chapter
7.7.4)
.
Additionally by using HotCode definition, you can define the cold-start resistant equivalent
flow velocity for the cut-off flow limit.
(See also chapter 2.4.4)
:
+
O
ISP
ISP
ISP
Immediately after pushing the BRK key, enter
this key sequence from the MAIN MENU.
absolute>SIGN<
Cut-off Flow
After entering the HotCode, these two displays
appear.
(Scroll up by using key ENTER.)
If you select
>ABSOLUTE<,
the USER defined
cut-off flow value will not depend on the sign,
identifying the direction of flow. There is only
one limit to be set. The measured value in
absolute numerical format will be compared
with the set limit.
If you select
>SIGN<,
the USER defined cut-off
value will depend on the sign, identifying the
direction of flow. Two independent limits can be
entered for positive and negative flow
velocities.
factory >USER
<
Cut-off Flow
>FACTORY<,
FLUXUS uses the factory default
setting of 5 cm/s for the cut-off flow.
Select
>USER<
to define the cut-off flow value
in absolute or sign dependent input format.
Depending on the choice, one or two limit
values must be entered. The largest value,
which can be set, is 12.7 cm/s.
In mode Cut-off Flow/>SIGN<, two limit values have to be entered for the sign-depending
flow direction:
Содержание FLUXUS ADM 6725
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